The Classification of p-Groups by Coclass Abstract: Since the conjectures of Leedham-Green and Newman have been proved, a more detailed analysis of the classification of p-groups by coclass has become necessary. With the knowledge on pro-p-groups of given coclasses the p-groups of these coclasses can be classified into subclasses. Using extensive computational evidence, it is possible to give some very detailed conjectures about the structure of these subclasses and about the behaviour of p-groups in terms of coclass. A. Schneider